List of 7 ancestors found in 30 iterations (7 distinct persons and 7 positions into tree)

Generation 0 - 1 person(s) on 1 (1 distinct persons)
1Grégoire de Preures (1032-1089)
Generation 1 - 2 person(s) on 2 (2 distinct persons)
2Jehan de Preures (0995-1067)
3Blanche de Créquy (1008-1065)
Generation 2 - 2 person(s) on 4 (2 distinct persons)
6Renaud de Créquy (~0967-1029)
7Giselberthe de Crespy (~0986-1037)
Generation 3 - 2 person(s) on 8 (2 distinct persons)
12Arnold III de Créquy (~0946-~0967)
13Ade van Arkel (~0952-0967)